Love the shading. It's rough, it's simple, it doesn't ask for anything, and yet... It's masterful. You take a look at it in a smaller size and it almost looks like it's colored in photoshop. Absolutely brilliant.
Have you ever seen the work by the artists here ~Death-by-Papercuts? the drawing in the middle has a very similar design to one of her characters. I couldn't help but immediately notice the similarities.
I'm not much into sci-fi, samuri, or armour but something is keeping me from deleting tis from my deviations box, I guess it's the amazing pencil work. I'm glad to see that traditional art still has a place in the digitally dominated war/gamey genre, great job!